From patchwork Mon Apr 7 15:27:08 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Luca Ceresoli X-Patchwork-Id: 14041166 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 405351FF5F4; Mon, 7 Apr 2025 15:27:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744039657; cv=none; b=h35Kw1JKb5eVRedL61b9k4OxK06nm/uIRPiTr5HwCUBQ/ULjBdr6Fk+5bSo4/lB+nrm+SMxekGSrJq+wFmPA+tz7NU9qDdmyDuoOgfBozGi6npgM43br+/kch0+RdbqC/rd/unSZfA6bIfkRMH3u707mSu9ZyDVbsKwh++d7rAk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744039657; c=relaxed/simple; bh=chi2S72Qz+3Kk/f0pWRKWplRodLpqmUGSLCZAA1sQJ8=; 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c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1744039652; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=s0/FGDDEEv1bADImBm72Eb+o2LF4PnN49TpkyA00SwI=; b=KukuFIp0YBL5FQjQWYQ8SGM7gkfrYmCM7nnmPpRASGoNkxuFJbGM0XKXsIwRRilROfUgwq ad6wshOz6uKHYkrgtVWgjy4lERLiqko/2OkisS6SdDhqulm4Nde6vJUFhfeICP0joX9rW+ 3HUdgGa3QxSuhSCz2y4T3lB+J8qt3L4ijmDvhjZX1lopmA+XqDyWMcsDNRLcOkAi7xnxeT xwZM4PbX4ciQYE4BNO87a6N1atu3bnOtMYTM1+0ptAhQlt+DC6n7wdkkhv9LPFzdVK55zA KzbvA57i8wz/lR9Epi8aAVu2EkCKVxnqEqmhObAGuQpYi3hgphLud2IDm1Wngg== From: Luca Ceresoli To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Jagan Teki , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Douglas Anderson , Chun-Kuang Hu , Krzysztof Kozlowski , Dmitry Baryshkov Cc: Luca Ceresoli , Anusha Srivatsa , Paul Kocialkowski , Dmitry Baryshkov , =?utf-8?q?Herv=C3=A9_Codina?= , Hui Pu , Thomas Petazzoni , dri-devel@lists.freedesktop.org, asahi@lists.linux.dev, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-renesas-soc@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH 33/34] drm/bridge: add devm_drm_put_bridge() Date: Mon, 7 Apr 2025 17:27:08 +0200 Message-ID: <20250407-drm-bridge-convert-to-alloc-api-v1-33-42113ff8d9c0@bootlin.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250407-drm-bridge-convert-to-alloc-api-v1-0-42113ff8d9c0@bootlin.com> References: <20250407-drm-bridge-convert-to-alloc-api-v1-0-42113ff8d9c0@bootlin.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mailer: b4 0.14.2 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvtddtheehucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkffojghfgggtoffgsehtkeertdertdejnecuhfhrohhmpefnuhgtrgcuvegvrhgvshholhhiuceolhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepudffiefgvdfftdffkeejjefhffduleejleeuieetieetgeehtefhjedtgeegieegnecukfhppedvrgdtvdemieejtdemvddtvddtmegvrgdtudemsggvgedumeelhegvjeemfeegfeemledufegvnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvdgrtddvmeeijedtmedvtddvtdemvggrtddumegsvgegudemleehvgejmeefgeefmeeludefvgdphhgvlhhopegsohhothihrdhfrhhithiirdgsohigpdhmrghilhhfrhhomheplhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepgedupdhrtghpthhtohepmhgrrghrthgvnhdrlhgrnhhkhhhorhhstheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmrhhiphgrrhgusehkvghrnhgvlhdrohhrghdprhgtphhtthhopehtiihimhhmvghrmhgrnhhnsehsuhhsvgdruggvp dhrtghpthhtoheprghirhhlihgvugesghhmrghilhdrtghomhdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtoheprghnughriigvjhdrhhgrjhgurgesihhnthgvlhdrtghomhdprhgtphhtthhopehnvghilhdrrghrmhhsthhrohhngheslhhinhgrrhhordhorhhgpdhrtghpthhtoheprhhfohhssheskhgvrhhnvghlrdhorhhg X-GND-Sasl: luca.ceresoli@bootlin.com Bridges obtained via devm_drm_bridge_alloc(dev, ...) will be put when the requesting device (@dev) is removed. However drivers which obtained them may need to put the obtained reference explicitly. One such case is if they bind the devm removal action to a different device than the one implemented by the driver itself and which might be removed at a different time, such as bridge/panel.c. Add devm_drm_put_bridge() to manually release a devm-obtained bridge in such cases. Signed-off-by: Luca Ceresoli --- To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Andrzej Hajda To: Neil Armstrong To: Robert Foss To: Laurent Pinchart To: Jonas Karlman To: Jernej Skrabec To: Jagan Teki To: Shawn Guo To: Sascha Hauer To: Pengutronix Kernel Team To: Fabio Estevam To: Douglas Anderson To: Chun-Kuang Hu To: Krzysztof Kozlowski To: Dmitry Baryshkov Cc: Anusha Srivatsa Cc: Paul Kocialkowski Cc: Dmitry Baryshkov Cc: Hervé Codina Cc: Hui Pu Cc: Thomas Petazzoni Cc: dri-devel@lists.freedesktop.org Cc: asahi@lists.linux.dev Cc: linux-kernel@vger.kernel.org Cc: chrome-platform@lists.linux.dev Cc: imx@lists.linux.dev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Cc: linux-stm32@st-md-mailman.stormreply.com --- drivers/gpu/drm/drm_bridge.c | 14 ++++++++++++++ include/drm/drm_bridge.h | 4 ++++ 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index b4c89ec01998b849018ce031c7cd84614e65e710..456363d86080b2a55035c3108c16afa4f9e57e06 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -1392,6 +1392,20 @@ struct drm_bridge *of_drm_find_bridge(struct device_node *np) EXPORT_SYMBOL(of_drm_find_bridge); #endif +/** + * devm_drm_put_bridge - Release a bridge reference obtained via devm + * @dev: device that got the bridge via devm + * @bridge: pointer to a struct drm_bridge obtained via devm + * + * Same as drm_bridge_put() for bridge pointers obtained via devm functions + * such as devm_drm_bridge_alloc(). + */ +void devm_drm_put_bridge(struct device *dev, struct drm_bridge *bridge) +{ + devm_release_action(dev, drm_bridge_put_void, bridge); +} +EXPORT_SYMBOL(devm_drm_put_bridge); + static void drm_bridge_debugfs_show_bridge(struct drm_printer *p, struct drm_bridge *bridge, unsigned int idx) diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index df9bbf6fd1fb522add28b76406b74cdb7391fc57..5b4e5e935a17ba6fc4a6a53ad0a302e249ca418b 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -1167,6 +1167,8 @@ static inline struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, return ERR_PTR(-ENODEV); } +static inline void devm_drm_put_bridge(struct device *dev, struct drm_bridge *bridge) {} + static inline struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, struct device_node *node, u32 port, @@ -1176,6 +1178,8 @@ static inline struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, } #endif +void devm_drm_put_bridge(struct device *dev, struct drm_bridge *bridge); + void drm_bridge_debugfs_params(struct dentry *root); void drm_bridge_debugfs_encoder_params(struct dentry *root, struct drm_encoder *encoder);